Question

The mean age of 11 women in an office is 27 years old. The mean age of 9 men in an office is 32 years old. What is the mean age (nearest year) of all the people in the office?

Answer 1

29 years

Explanation:

11 x 27 = 297 = total of all the ages of the women

9 x 32 = 288 = total of all the ages of the men

297 + 288 = 585 = total of all the ages of everyone

585/20 = 29.25 ≈ 29